Resolving dependencies...
Configuring mtl-2.2.1...
Configuring syb-0.6...
Building mtl-2.2.1...
Building syb-0.6...
Installed syb-0.6
Installed mtl-2.2.1
Downloading tersmu-0.2...
Configuring tersmu-0.2...
Building tersmu-0.2...
Failed to install tersmu-0.2
Build log ( /home/builder/.cabal/logs/tersmu-0.2.log ):
cabal: Entering directory '/tmp/cabal-tmp-13741/tersmu-0.2'
Configuring tersmu-0.2...
Building tersmu-0.2...
Preprocessing executable 'tersmu' for tersmu-0.2...
[ 1 of 16] Compiling Util             ( Util.hs, dist/build/tersmu/tersmu-tmp/Util.o )

Util.hs:15:1: warning: [-Wtabs]
    Tab character found here, and in two further locations.
    Please use spaces instead.
[ 2 of 16] Compiling Pappy.Pos        ( Pappy/Pos.hs, dist/build/tersmu/tersmu-tmp/Pappy/Pos.o )

Pappy/Pos.hs:9:1: warning: [-Wtabs]
    Tab character found here, and in 27 further locations.
    Please use spaces instead.
[ 3 of 16] Compiling Pappy.Basic      ( Pappy/Basic.hs, dist/build/tersmu/tersmu-tmp/Pappy/Basic.o )

Pappy/Basic.hs:13:1: warning: [-Wtabs]
    Tab character found here, and in 81 further locations.
    Please use spaces instead.
[ 4 of 16] Compiling Pappy.Parse      ( Pappy/Parse.hs, dist/build/tersmu/tersmu-tmp/Pappy/Parse.o )

Pappy/Parse.hs:26:10: error:
    • Could not deduce (Applicative (Parser d))
        arising from the superclasses of an instance declaration
      from the context: Derivs d
        bound by the instance declaration at Pappy/Parse.hs:26:10-37
    • In the instance declaration for ‘Monad (Parser d)’
cabal: Leaving directory '/tmp/cabal-tmp-13741/tersmu-0.2'
cabal: Error: some packages failed to install:
tersmu-0.2 failed during the building phase. The exception was:
ExitFailure 1